The prototype of Zhangdian is Guo Chang County, which is Zibo City after Linzi and Gaoqing (Qiancheng).

Now it's by the Fuxiao River in the south of Zhangdian.

During the Warring States Period, Le Yi, the general of Yan State, defeated the army of Qi State and occupied more than 70 cities in Qi State. There are only two cities in Qi, namely Ju and Jimo.

As the second and third largest cities in Qi, it was held, but in the end, the soldiers and civilians in both places were led by Tian Chan. Due to the disarray of Yan Jun, they finally recovered all the lost land of Qi, but this war weakened Qi, and there was no hegemony in the early Warring States period.

Momentum. Lost the right to be with Qin.

The force of resistance, but as the head of the five tyrants in the Spring and Autumn Period and the crown of the seven heroes in the Warring States Period, Qi is still not to be underestimated and has become the last stream of Qin.

A destroyed country.

Chang was the first city in Le Yi, Le Yi was named Chang and Zhangdian was the first city, which lasted for five years. Later, Linzi belonged to a city.

During the Qin Dynasty, Guo Chang and Qiancheng were counties, which were classified as Linzi County. Later, it was one of the three major towns in Zichuan (Shen Yan, Jinling and Zhangdian).

In 1960s, it succeeded Boshan and became the capital of Zibo.

I hope it helps you. I don't know.